Apple received a trademark for the word 280 and the icon for its iOS navigation app. The trademark application was filed in April 2010 and granted on June 28, 2011. "280", for those who are wondering, refers to Route 280 which runs next to Apple's campus at One Infinite Loop in Cupertino.
The granting of this trademark gives Apple ownership of the word and its icon. Any mapping or navigation company using a similar logo or the word 280 to identify their application may want to hire a graphic designer to do a redesign as soon as possible.